光催化
降级(电信)
材料科学
纤维素
复合数
化学工程
异质结
抗压强度
亚甲蓝
催化作用
复合材料
化学
有机化学
电信
光电子学
计算机科学
工程类
作者
Jia-Xin Ren,Jinlong Zhu,Shao-Cong Shi,Mao-Qiu Yin,Hua‐Dong Huang,Zhong‐Ming Li
标识
DOI:10.1016/j.carbpol.2022.119957
摘要
Hydrogel supported photocatalyst, an efficient strategy for water remediation suffers from compromised catalytic activity and insufficient stability. Herein, a robust cellulose-based composite hydrogel with zinc oxide (ZnO)/silica (SiO2) heterojunctions were fabricated by in-situ synthesis, where SiO2 not only acted as a cross-linking agent to enhance the mechanical strength and stability of hydrogel, but also promoted the photocatalytic properties of ZnO via transferring the electron-hole pairs due to its surface state. As a result, a significant improvement in the mechanical properties of cellulose-based composite hydrogel was achieved, exhibiting a high compressive strength of 703.4 kPa. Moreover, the degradation efficiency of methylene blue (MB) under light irradiation by cellulose-based composite hydrogel was 95 % in 120 min and the removal ratio maintained as high as 90 % after eight degradation cycles. This study provides a low-cost and facile method to construct new hydrogel supports with high stability and efficient photocatalytic properties.
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